如何根据状态值在反应中获取数据

Question

on a button-click i am changing a value of a state property based on that value i want to fetch the data. Issue I am facing is that, data is fetched before the state change even after calling it after the set state method. Due to which data is fetched based on the previous value of the state. (new to react please help)

Answer 1

If I understood it right. You want to use the updated value of a state.

You can use callback method of setState.

For example -

this.setState({item1: 25}, ()={
 // now use your updated state in your code...
 console.log(this.state.item1); // will give you new value of item1
})